Tsurumi-ku, Yokohama | Roof Replacement | Performed roof renovation and leak prevention using Ridgeway!

Hello!
I am Yamanaka from Kakeru Koumuten Co., Ltd., a specialist in roofing, exterior painting, and exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!
This is a case study of an exterior renovation project in Tsurumi-ku, Yokohama, Kanagawa Prefecture.
There are several types of exterior renovations, and this project involves a roof overlay (cover method) work (Ridgeway)!
We implemented leak prevention measures through the roofing work!

This page will explain the actual results of the work carried out by Kakeru Koumuten!

We received a request from our long-time partner renovation company, T Company!
Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors.

Roof Overlay (Cover Method) Construction Steps

1. Existing Roof Material Demolition

We will dismantle the existing roof materials (tiles)!

2. New Sheathing Installation

3. Roofing Installation (Waterproof Sheet)

The roofing used is Tajima Roofing/P Color EX+!
It is made of modified asphalt roofing material, which is said to have double the durability of regular asphalt roofing.
With the roofing properly installed as the primary waterproofing, there will be no leaks!
We will securely attach it to prevent it from blowing away. [/chat]

4. Accessory Processing (Arabesque)

Before the main roof construction, we will process and install accessories such as eaves and arabesque!
The accessories used are made of Galvalume steel. [/chat]

4. Main Construction (Asahi Fiberglass/Ridgeway)

After processing the accessories, we will install the Ridgeway main roofing up to the ridge!
Once the roofing is completed up to the ridge, we will install the necessary materials to secure the ridge cap, known as the “kanban.” There are types made of cedar and resin, and this time we used the resin type!
The resin type is expected to have three times the durability of the cedar type! [/chat]

5. Ridge Cap Processing & Sealing at Various Locations

6. Cleaning

We will clean up the debris that has fallen on the balcony and rain gutters. We will thoroughly carry this out as nails and metal fragments can lead to injuries. [/chat]

About Roofing Materials

The roofing material used is the Ridgeway from Asahi Fiberglass.
Ridgeway comes with a 10-year manufacturer warranty.
Since it uses natural stone that is baked on the surface, it is a roofing material that does not require painting, which helps to reduce maintenance costs!
Additionally, because it uses fine natural stones on the surface, you won’t be troubled by the sound of rain.
Moreover, it is a lightweight roofing material, making it strong against earthquakes and providing seismic resistance.

Colors

■ Dual Black

■ Harvard Slate

■ Vintage Green

■Dual Brown

■Earthen Cedar

This time, we completed the roof work with Earthen Cedar very well!
The customer was extremely satisfied, and I was very happy too!
Thank you very much!

Please check out other roofing work achievements from here!

What is the Roof Overlay (Cover Method)?

The roof overlay method involves leaving the current roof almost as it is and placing a new roof on top of it, effectively covering it.
Literally, it is a method of covering a roof with another roof. Therefore, the roof becomes double-layered. Since the roof is laid over, it is also referred to as “overlapping roofing.”

Advantages of the Overlay Method

Since a “new roof” is placed over the “current roof,” demolition work is almost unnecessary, meaning that very little waste is generated.
This is its biggest feature, leading to various advantages.

The only parts that require demolition and waste disposal are the ridge cap, making it more cost-effective compared to complete roof replacement.
In 2004, regulations regarding the concentration of asbestos in raw materials were changed (for details, please refer to the Ministry of Health, Labour and Welfare website).
Some building materials used in constructions completed before 2004 contain asbestos. Asbestos-containing materials are difficult to demolish due to their high environmental impact, and the costs for demolition and waste disposal are also high. The overlay method, which generates almost no waste, is ideal for such roofs.

Some may wonder, “Is it safe to live in a building that uses asbestos-containing materials?” but rest assured. As long as it is not destroyed or crushed, it will not disperse into the air.
If you are unsure about the type of roof on your home, please feel free to consult us.

Additionally, it can be completed in a shorter time frame compared to painting or complete roof replacement. A shorter construction period means lower labor costs, which in turn makes the costs more affordable.
The psychological anxiety of having to live in a different environment is also reduced.
When scaffolding is set up, there may be inconveniences such as difficulty in entering and exiting or opening windows. Being able to return to normal life in a short period is a significant advantage.

Our company specializes in roofing work, and the roof overlay method is the most frequently performed type of work we do. We are very grateful that we are continuously engaged in roof overlay method projects without interruption.

Roof Material	Asahi Fiberglass/Ridgeway
Manufacturer Warranty	10 years
Expected Durability	25 to 30 years
Color Used This Time	Earthen Cedar

Summary

With extensive experience and solid knowledge in roof renovations in Tsurumi-ku, Yokohama, we at Kakeru Koumuten Co., Ltd. have earned high trust from local customers.

Community-Based Service

We are an exterior renovation company based in Aoba-ku, Yokohama, but we have also handled many roof renovations in Tsurumi-ku, deeply understanding the needs of local customers. Whether you want to “make it last long with one renovation,” “keep costs down as much as possible,” or “improve insulation because the indoors are hot,” we provide optimal solutions to specific requests.

Long-Term Reliability

All the roofing materials we use are highly reliable products that offer long-term warranties. For example, the Ridgeway from Asahi Fiberglass used this time comes with a 10-year manufacturer warranty. Additionally, it is lightweight, making it strong against earthquakes and providing seismic resistance.
You can use it with peace of mind for a long time after one renovation.
While Ridgeway is an excellent roofing material, we also handle materials with even higher durability and better insulation properties.

Leave Your Roof Renovation in Tsurumi-ku, Yokohama to Kakeru Koumuten!

We have a wealth of experience in roof renovations not only in Yokohama but also in Tsurumi-ku.
We are happy to assist with partial roof repairs, including roof overlay work, roof replacement work, and leak repairs.
If you just want to know the estimate for a roof renovation or have questions about roofing materials, please feel free to contact us!

Estimates and inspections are, of course, free! If you have any concerns regarding roofs, rain gutters, exterior walls, or exteriors, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!

Kakeru Koumuten Co., Ltd. is a remodeling company strong in exterior renovations, and we carry out everything from temporary scaffolding work to roof work and exterior painting completely in-house.
When it comes to exterior renovation work, we are confident that we do not fall short compared to other companies in terms of “cost, quality, and efficiency”!

We are confident in our exterior renovations, so we welcome competitive estimates!
We also offer comprehensive construction guarantees and aftercare maintenance, and we have received positive feedback for our proposals that match our customers’ future life plans and provide excellent cost performance!

We want you to think, “I’m glad I asked!” Therefore, we take every request we receive seriously.

We also have information on roof construction costs and pricing plans for the roof overlay (cover method), so please take a look if you are interested!

We look forward to your inquiries. Thank you very much.

Helpful information about exterior renovations can be found here!

LINE consultations are also very welcome◎

For roofing, guttering, and exterior work and repairs in Kanagawa, contact Kakerukoumuten Co., Ltd..

AAA is a young company with an average age in the early 20s, but our technology is second to none.

One of our greatest strengths is that we can do all of our own scaffolding, roofing, and painting work. In this industry, where work is generally divided, we are able to provide a complete set of services, which saves time and effort in management and reduces costs. Above all, if there is any trouble, we will come to you right away!

We can confidently declare this. We are the youngest and most friendly renovator in Kanagawa!